Stability Analysis of Chemical Quality of Tobacco Leaves in Honghe Prefecture of Yunnan ProvinceTiyuan Xia, Zuoxin Tang, Zebin Chen, Zhen Ren, Qinghua Lu, Kun Huang, Yali Fu, Fengping Ni and Xiaodong ShaoE3S Web Conf., 131 (2019) 01093DOI: https://doi.org/10.1051/e3sconf/201913101093